Seam for woven-wire belts



H. LINDSAY SEAM FOR WOVEN WIRE BELTS Filed Sept. l5, 1922 2 Sheets-Sheet] www@ W ,1 www@ w\\ SQN EN u@ M humm Mmm mm hm www.

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SEAM FOR WOVEN WIRE BELTS Filed Sept. l5. 1922 2 Sheets-Sheet 2 /54 fda/462 g @n w e g@ m Q l n MVENTOR Q QS w MQW/w @Amy @779.24% JKM, ATH/.S

Patented Aug. 14, 1923.

PUNITED STATES PATENT OFFICE.

`HAMILTON LINDSAY, OE CLEVELAND, OHIO, AssIeNoE To THE LINDSAY WIRE wEAvINe COMPANY, -OE CLEVELAND, OHIO, A CORPORATION or OHIO.

s EAivrV Eon wovEN-WIEE BELTS.

To all fw 7mm t may concern:

Be it known that I, HAMTLTON LINDSAY,

a. citizen of the United States, residing at' Cleveland, in the county of Cuyahoga andv State of Qhio. have invented a certain new rand useful improvement in Scams for lNwen-llfireBelts, of which the following is a full. clear, and exact description, reference being had to the accompanying drawings.

This invention relates toa method Vof vjoining the ends of a wire fabric to forman endless belt which is particularly usefulin Fourdrinier paper machines. More particuv larly, my invention is concerned with a seam for lacing the ends of a belt having a special eration, and are manipulated so that one lgroup forinsone plane of the shed while the other two .groups form the other plane Vof thev shed, while the shuttle passes therer.ietween and across the loom. These groups are interchanged after each stroke of the shuttle, whereby'the fabric so formed has short. knuckles on `the Vupper side of the belt and long Alzfmcklcs on the lower side thereof. This results in a construction Vwhich gives alonger wearing surface to the under side of the belt, thusincreasing the 4the ,interstices (which Awould renderit diili` cult Vfor waterto pass through this seam f. when the belt is in use) and at vthe samev time forms a Asufficient support between the ends of the fabric so as not to strain the pulp.vr Anotherdiliculty is the arrangement of closing wires which do not displace the lay wire so as to distort the. mesh.

Y Accordingly, one ofthe objects ofl my in- -vention is the provision of a seam having sulcient space for the passage of water Application filed September 15, .71922. Serial No. 588,327.

therethrough, and suiicient support between the ends of the lfabric so that the pulp is properly drained and atthe same time supported adjacent the seam, whereby the paper is not weakened. Another object is the provision of a seam for use in a belt constructed in the manner above set forth which will not weaken the wires adjacent the ends of the fabric. Furthermore, my invention includes .a seam` the wires of whichA lie in substantially the same plane as the warp wires so that the wear occasioned by the passage of the seam across a suction box is not greater than that occurring on other parts of the belt.

The preferred embodiment for carrying .out my invention is illustrated in connection with the accompanying drawings, and is hereinafter described in detail. The essential features are summarized in the claims.

In the drawings, Figs. 1 and 2' are plan views illustrating the ends of a belt having a weave constructed according to the manner set forth in my co-pending applicatiOn,-and illustratingv the application of a stitchingwire` wherein Fig. v1 shows the top side of the belt, while Fic. 2 shows the bottom side thereof; Figs. 3 and lare views similar to Figs. 1 and 2 and show the application of a closing wire tothe stitching wires; Figs. 5 and Vlo are views corresponding to Figs. 3 and f1 with the applic-ation of a second closing wire in the nature of a reinforcement; and Figs. 7, 8. and .9 are sections taken on the corresponding lines in Figs. 1, 3, and 5 respectively.

As shown in Figs. l to 6, A indicates the longitudinal or warp wires of the fabric and B thotransverse or lay wires. In Figs. 7 to 9, the foremost warp wire A1 passes over Vthc transverse wire B1, thence beneath two transverse wires B1 and B3, over the Vwire B4, and thence beneath the next two transverse wires of which one only is shown at Bf.. vThe next warp wire indicated at A2 passes beneath the two lay wires B1 and B2, thence over the lay wire B3, thence` beneath the two lay wires B4 `and B5, etc. The third warp wire `A3 shown particularly in Fig. l

`.passes beneath the' lay wire B1, over the lay .wire B2. thence beneath the two lay wires B1 and B4, over the lay wire B5, etc.

Y The described construction is illustratedl by reference characters, particularly in the upper halfof Fig. l, but the weave is the same for all `figures illustrated. llVith this construction then, the fourth warp wire would correspond to the wireiiil, the fifth to the wire A2, etc.; whereupon the lay wires lie alternately over two and beneath one warp wire, etc.

The fabric shown and described thus has on its under side a. series of long longitudinal knuckles in con'tr-adistinction tothe short or abrupt knuckles on the upper side. ccordifngly, every third warp wire adjacent the same lay wire has a short knuckle on the upper side', as is shown particularly Fig; l, wherein the wire B4 has short 'lui-tickles on the top side indicated at 'l0 to. 1:3, etc. Similarly, the wire B3, on the top side 0f the fabric, vhas short knuckles, veach positioned one warp wire to the left ,of those forming the short knuckles over the wire B4. knuckles for the 16 to 20, etc.

My invention, as heretofore. stated, embodies a seam for closing the ends of a belt having a weave 4as heretofore described. To this end, I have shown the iirst step in forming theseain as embodying stitching wii'es Gand C1 which extend over the ends of the fabric and on opposite sides thereof to form loops for receiving the closing wires will be hereinafter i described. Each stitching wire is carried back sever-al lay threads, whereby the stresses on the. closing wires incident to the tension on the belt duringoperation, will not pull the lay threads out of the fabric. Accordingly, I have shown the stitching wire C in Fig. l 4as passing over the lay wire B4A and to the leftI of .the short knuckles l() to 111-. brings the inner loops of the stitching wire over a lay wire which is held. in position on one side by the short knuckles l0 to lt and on the other side by the short knuckles 16 to Q0. In this way, the lay wire is not disrtccordingly, the short wire B3 arc indicated at torted when tension is placed upon the belt.

The outer loops of the Vstitching wire C are shown as passing around the wire B1 and in such position as to avoid the knuckles on the top and bottoin sides of the fabric the; bei-t. 007,'

adjacent tl e ends thereof. For this reason, the stitching wire is carried as indicated in the upper half of Fig. l, substantially pars alle] .to thewarp wires for about half .the length of 'the loop. The upper half of Figs. l and 2 indicate the positioning of the stitchingwire C on the top and bottom sides of ."In the lower halfof Figs. l Iand 2, I have shown astitch'ing wire C1. In these riews, the lay` wires are indicatedat BB1 to inclusive, and the stitching wire is shown as extending over the wire B Bt adjacent the short knuckles l()n to 14a respec- This .stice or row.

tively. These knuckles are shown in the 'lowerhalf yof Fig. l. Vas ybeing to the vleft of Vknuckles indicated at 16n to 20" respectively.

Thus, the inner loops of `the stitching wire C1 cross the lay wire BB4 intermediate two short knuckles whereby the lay wiie BB4 is not distorted when tension is placed upon the belt. Similarly the wire C1 is laid so as to avoid the knuckles whereby in the( finished seam the stitching wire lies in the saine plane as the warp wires. particularly to Fig. 2, it will be seen that the stitching wires on the under side of the fabric lie substantially parallel to the warp wires, thus reducing the diagonal stresses on the lay wires B4 and BB* to a minimum when the belt is in use. Y

In Figs. 3 and 4, I have shown the next step in the making of the sea-m, namely the applicationof the closing wire. This closing wire is indicated at D, as extending between the loops formed by the stitching` wires C and C1; the weave being such that the closing wire passes on opposite sides of the fabric through the loops on every third mesh. In Fig. 3, the top side of the belt shows the closing wire D extending across the continuation of two warp wires, while the under side indicated in Fig.V 4 shows the closing wire passing over the continuation of only one warp wire. In this way, the closing wire on the bottom side is more nearly parallel to the warp wires, and at the saine time does not cross a knuckle.

ik belt having a stitching wire at each edge of the seam and a'closing wire, as indicated, may have sufficient rigidity for use, but it is preferable to employ a reinforcing wire in the nature .of a second closing wire as indicated at E in Figs. 5 and G. In the lowei half ofl Fig. 5, this closing wire is shown as passing between the same warp wires through whichl the stitching wire C1 extends except that the loops for the wire lil extend over the lay wire BB2. 0n the opposite end of the belt however, the loops for the wire E pass over the wire B2 and one row to the left of that occupied by the inner loops. of the stitching wire C. Accordingly, the wires C, C1, D and E lie in substantiallyY the plane of the warp wires on both sides of tie belt. It will further be noticed that in the upper half ofthe fabric in Fig. 5, theV wires C. E and D each occupy a different row and are positioned in every third inter-V In the lower half however. two of the wires, namely C1 and E, occupy the saine row. while the wire D occupies the row to the left of that occupied by the wires and C1. In this connection the term row means the interstices or mesh intermediate two adjacent warp wires.

Referring Referring now to Fig. 6 wherein the lower side of the belt is shown, the second closing wire extends from one end of the belt, across the continuation ofone warp wire, and then over the wire B2 on the opposite end thereof. By making the closing wires extend across a continuation of only one warp wire on the under side of the belt, I provide a seam wherein the stitching andclosing wires are all nearly parallel, and at the saine time I provice a connection which does not tend to displace the lay wires when the belt is in use. Moreover, the `reinforcing wire E serves to close the space between `the ends of the belt whereby the paper formed adjacent the seam is not weakened.

A seam constructed according-to my invention transmits the operating stresses to lay wires remote from the ends of the belt and at the same time provides an anchorage .adjacent short knuckles, whereby movement or displacement of any -lay wire is prevented. The proper drainage is not interfered with,

4and at the same time the pulp is properlyV supported. A further feature set forth by my invention is the positioning of the stitching and closing wires so as to maintain the wires forming the seam within the. same plane as the warp wires. In this way, the wear on the seam and cloth is substantially uniform.

l. A seam for an endless belt wherein the weave comprises warp wires and lay wires,

the warp wires having long'knuckles on oneV p side of the belt and short knuckles on the other side thereof, having a closing wire eX- tending from one end across the seam opening to the other end and over lay wires, the lay wire on one of the ends having a portion of a short warp knuckle adjacent the closing wire. Y

2. A seam forfwoven wire'belts. wherein the weave comprises warp wires and' lay wires, therwarp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having a closing wire extending from one end of the belt across the seam opening` to theV other end thereof and over lay wires, at least one of the lay wires having a portion o f a short warpknuckle adjacent the closing wire said short knuckle being positioned intermediate the opening through which the closing wire passes and the end of the belt.

3. A seam for an endless belt wherein the weave comprises warp wires-and lay wires, the warp wires having long knuckles on one,

side of the belt and short knuckles on the other side thereof, having a wire extending 1- over-a lay wire and intermediate two warp Vwires, one ofthe warp wires having arshort i es 4f. A seam for woven wire'belts wherein the fabric has warp wires forming long knuckles on one side of the fabric and short knuckles on the opposite side thereof, having a wire extending-from the ends of the fabric inwardly and over a lay wire, the warp wire on one side of the first-mentioned wire forming a short knuckle over said lay wire, and the warp wire on the other side forming a short knuckle over the next .lay wire toward J[he end of the belt.

5. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side 'of the belt and short knuckles on the other side thereof, having a stitching wire and a closing wire passing through the fabric adjacent. the ends of the belt,v the stitching` wire passing through the fabric over a lay wire and intermediate two warp wires, one of which has a short warp knuckle over said lay wire adjacent the stitching wire, and

a closing wire on at least one endi'of the belt passingacross the ends of the belt and between two warp wires other than those through which the stitching wire passes.

6. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires havinglong knuckles on one side of the belt and short knuckles on the other side thereof, having a stitchingwire passing through the fabric adjacent the end of the belt and through every third row to form loops, said stitching wire passing over a Vlay wire remote from the end of the belt, the warp wire on at least one side of the stitchingl wire forming a short knuckle over said lay wire, and a closing wire passing through loops formed by the stitching wire.

7. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles ou onel side of the belt and short. knuckles on the other side thereof. having stitching and closing wires passingthrough the fabric adjacent the ends to he joined, said wire passing on one end of the belt over lay wires, each of said lay wires having a warp wire on one side of the first mentioned wires forming a short knuckle, with the warp wire on the other side forming a short knuckle over the adjacent lay wire.

8. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having stitching and closing wires passing through the ends of the belt, such stitching and closing wires occupying different rows on one end of the belt, and ,occupying the same row on the other end of the belt.

9. A seam for woven wire belts, wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles the belt, said wires onone side of the belt and short knuckles on lthe other side thereof, havingT stitchingand on one end ot' the belt and occupying; the `same row on the other end of the belt, and

fall of said wires passing' through the fabric over lay wires which have a sl n't knuckle on one side of said stitchingl and closing` wires. 4

10. A seamy for an endless belt, wherein the weave comprises warp wires and lay wires, thejwarp wireshaving` long knuckles on one side of the belt and short knuckles on the ther side thereof, havinga stitching wire and two closingI wires passing through the fabric adjacent the ein'ls ot the belt, all of said wirespassing through di''llereut rows on one end of the belt.

11. the weave comprises warp wires wires, the warp wires having' long' on one side of the belt and short knuckles on the other side thereof, havinga stitchimr wire and two closingr wires passino; through and lay knuckles Vthe fabric adjacent the endsof the belt, the

stitching and one closingv wire on end of the belt occupying the same row` V12. A seam, for an endless belt, wherein the weave com arises warp wires and lay wires, the warp wires having` long knuckles on one side of the belt and short knuckles on the other side thereof, having a stitchii'ig wire and two closing` wires passing,- through the fabric adjacent the ends of the belt, all of said wires passing through different rows on one end of the belt, and two of the wires passing through the same row on the other end'of the belt. Y

13. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long); knuckles on one side of the belt and short knuckles on the other side thereof, having' a stitching wire and two closing wires passing through the fabric adjacent the ends of the belt, all of said wires passing through different rows on one end of the belt, and at least one of said wires passing over a lay wire which has a short warp knuckle adj acent thereto.

14. A seam for an endless belt, wherein the wea-ve comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt, and short knuckles on the other side thereof, having a stitching,` wire and two closing wires passing through the fabric adjacent the ends of the belt, the stitching and one of said closing' wires occupying the same rowV on one end of the belt, but passing over different lay wires, and each of said lay wires having a portieri of a Y short warp knuckle adjacent the first men- A seam for an endless belt, whereinV the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having a stitching and two closing wires passing through the fabric adjacent the ends of the belt, all of said wires on one end of the belt passing through different rows and over different lay wires.

16. A seam for an endless belt, wherein t-he weave comprises warp wires and lay wires, the warp wires having long knuckles on one side ot the belt and short knuckles on the other side thereof, having` a stitching wire and two closing wires passing' through the fabric adjacent the ends of the belt, all of the wires on one end of the belt passing through different rows and over different lay wires, and the stitching' wire and one closing` wire on thev other end of the belt occupying the same row, with the other closing wire occupying a different row.

17. A seam for woven wire belts, wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having; a stitching wire extending around the ends of the belt to form loops, and a closing; wire extending through the loops, said closing wire passing on one side of the fabricover a continuation of two warp wires and on the other side over a. continuation of one warp wire.

18. A seam for an endless belt, wherein the weave comprise warp wires and lay wires, the warp wireshaving long knuckles on one side of the belt and short knuckles on the other side thereof, having a stitching wire passing over aplay wire, and through every third row to form loops, said lay wire having a portion of a short knuckle on each side of the loop, and having a closing wire through the loops formed on the stitching wire, said closing wire occupying rows different from those occupied by the stitching wire.

19. A seam for woven wire belts, wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, havingvstitching and closing' wires passing through the fabric adjacent the ends of the belt in such manner that some of the wires pass through the fabric adjacent the short knuckles and also in such manner that such wires lie approximately parallel to the warp wires on one side of the fabric.

20. A seam for woven wire belts, wherein the weave comprises warp wires and lay wires, the warp wires having' long knuckles on onesideof the belt and short knuckles on the other side thereof, having closing wires extending overtheends of the belt andl over lay wires, said lay wires having at least one short knuckle passing` thereover adjacent the interstices through which the clos ing wires-extend, said closing wires passing on the other side thereof, having on one side of the belt over the continuation of one warp wire and passing on the other side of-the belt over the continuation of two warp wires.

2l. A seam for an endless belt, wherein the weave comprises warp wires and lay wires, thel warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two closing wires passing across the ends of the belt, atleast one of the wires passing overy a lay wire, said lay wire having a short knuckle adjacent thereto, and said closing wires occupying different rows on both ends of the belt.

22.. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on 'the other side thereof, having two closing wires passing across the ends'of the belt, said wires occupying differentV rows and passing over different lay wires.

23. A seam for an endless'belt wherein the weave comprises warp wires and lay wires, the warp wires having'long knuckles 0n one side of the belt and short knuckles a stitching wire and two closinor wires passing through the fabric adjacent the ends of the belt,vand` inV such manner that on one end of the belt, the stitching` and closing wires occupy di'erent rows and pass o-ver different lay wires, while on the other endA of the belt two of the Vwires occupythe saine row, but all pass over diflerentlay wires, and the closing wires on one side of the belt passover a continuation of one waip wire7 while on the other side of the belt over a continuation of two warp wires, whereby said stitching and closing lwires lie in the saine plane as the warp wires. Y

25. A seam for an endless belt, wherein the weave comprises, warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having stitching and closing wires passing through the ends of the belt, with one of the wires extending .overa lay wire which has a short knuckle 27. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt andshort knuckles on the other side thereof, having stitching and closing wires passing through the ends of the belt, the stitching wire passing through the fabric over a lay wire and intermediate two warp wires, one of which has a short knuckle over said lay wire adjacent the stitching wire.

28. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having stitching and closing wires passing through the ends of the belt, the closing wire passing through the fabric over a lay wire intermediate two warp wires, one of which has a short knuckle over said wire adjacent the closing wire.

29. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of thebelt and short knuckles on the other side thereof, and having stitchingV and closing wires passing through the fabric adjacent the ends of the belt, said wires occupying the saine row on one end ofthe belt but passing over different lay wires, at least one of the lay wires having a portion of a short warp knuckled adjacent the closing wire.

30.A seam for an endlessbelt wherein the weave comprises warp wires and lay wires, thewarp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having stitching and closing wires passing through the fabric adjacent the ends of the belt, said wires occupying' the saine row on one end of the belt but passing over different lay wires, at least one of the lay wires having a portion of a short warp knuckle adjacent the stitching wire.

31. In a seain for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, a stitching wire passing over a lay wire through every third row to form loops, said lay wire having a portion of the short knuckle on each side of the loop. j

32. ln a seam for an endless belt, wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereo't, a stitching4 wire passing;` over a lay wire to torni looips, said lay wire having` a portion oi? the short wanp yknuckle on the side ot' the stitching wire toward the end oi the belt.

83. il seain tor an endless belt wherein the weave comprises warp wires and lay wires, the warp rires having long` knuckles on one side otthe belt and short knuckles on the other side thereof, having a closing wire efr-tendingthrough the ents ot the belt and over la)7 wires, said closing'wire passing,` on one side oi? the beit over a continuation oi one warp wire, and passing` on the other side oft the belt over a continuation ol two warp wires.

3e. A, seam for an the weave comprises endless belt, wherein warp wires and lay wires, the warp wires having' long knuckles on one side' of the belt and short knuckles on the other side thereof, having` two closing wires passing across the ends oit the belt, at least one of the wires passing over a lay wire having a short warp knuckle adjacent thereto.

35. A `seam tor an endless belt wherein the weave comprises 'warp wires and lay wires, the warp wires having1 long knuckles `on one side oi the belt and short knuckles fabric adjacent the ends oil the belt, at least,

oneof said wires passing` over a laj7 wire seam for an endiess belt wherein the weave comprises warp wires and lay" wires, the warp wires ha anni long .knuckles on one side oi'il the belt andvshort knuckles on the other side thereezt, havin 9; a` stitching; and two closing wires passing tirough.the

itabric adjacent the ends of the belt, one ,ot said closing wires passing' through thel belt over a laj7 wire which Vhas a short warp knuckle adjacent to the closing wire. Y j

39. A seam for an endless belt, wherein the weave comprises warp wires and lay wires, the warp wires havingI long knuckles on one side of the belt, and short knuckles on the other side thereof, having` a stitching and a closingv wire passing through. the labric adjacent the ends of the' belt, at least one et said wires passi-ngi; through the belt over a lay wire and intermediate two warp wires, one or" the warp wires having a short knuckle adjacent said lay wire. Y

Ll0. ik seam for an. endless belt, wherein the weave comprises Vwarp wires and laj7 wires, the warp wires having` long knuckles on one side of the belt and short knuckles on the `other side thereof, havinga stitching and a closing` wire passing through. the ilfabric adjacent the ends of the belt, both of said wires passing,` through the fabricover a layv wire. and intermediate two warp wires,

and each oi said lay wires having a short warp knuckle adjacent thereto. Y

In testimony whereof, l. hereunto aliX my signature;

HAMILTON LINDSAY.Y 

